Cathodoluminescence spectraofphosphosilicatesamples,
crystalandglass,arepresentedin Fig. 2 for 293K.Inbothcases
spectra arespreadinwavelengthfrom6eV(200nm)to1.55eV
(800nm)containingbandsinUV,visibleandyellow–red partof
spectra. CLofyellow–redbandisdecreasingduringirradiation.
That isexplainedasradiationcreation–destruction ofcenters.
Aftercathodoexcitaitonexperimentirradiatedplaceofsampleis
pink colored,andthencorrespondingcentersarecreated.TheCL
decaykineticscurvesaresimilarforbothmaterialsandpossess
fast repeatingexcitationbeampulseandslowintherangeof
3–10 ms withinlevelofnoise